Pinout cov khub

Niaj hnub nimno txoj kev siv Internet sib txuas muaj ob peb qho kev xaiv: siv coaxial cable, fiber ntau optic thiab cov khub. Cia peb nyob rau tus yam ntxwv ntawm lub kauv cable thiab yuav ua li cas pinout yog ua los ntawm cov khub, dab tsi yog xav tau thiab yog dab tsi kev cai yuav tsum tau ua raws li.

Twisted khub yog hu ua cov nyob ntawm tej uas cov thiab them nrog rwb thaiv tsev. Ib tug twisted cable tej zaum yuav comprise ob los yog plaub cov officers ntawm nyob ntawm tej, muab tso rau hauv ib tug dielectric sheath. Cov nyob ntawm tej yog txawv voltage ntaub ntawv teeb liab nkag los ntawm lawv. ntau hom twisted-khub yuav tsum tau qhia. Lawv yog cov unshielded, ntawv ci nrog ib tug sab nraud screen, ntawv ci nrog ib tug khub ntawm sab nraud cov ntxaij vab tshaus, kev tiv thaiv thiab shielded kev tiv thaiv. Twisted khub muaj ib tug disadvantage. Thaum nws lub lag luam muaj ib tug uas yuav ntawm interception ntawm cov ntaub ntawv kis tau los ntawm cable. Kev khiav nws yog tsim nyog nyob rau hauv kom tsis txhob eavesdropping. Nyob rau lwm cov tes shielded cables yog kim heev thiab yog li ntawd tsis tshua muaj siv.

Lub cables, uas yog siv nyob rau hauv cov khub, muab faib mus rau hauv ob peb pawg. Tus thawj yog lub xov tooj cable rau kis hais lus. Los ntawm qeb cable 2 yuav kis ntaub ntawv nyob rau hauv ib tug zaus band mus txog ib megahertz, Qeb 3 - rau kaum megahertz, qeb 4 - mus rau nees nkaum megahertz. Xeem nws yog tsis tshua muaj siv, vim hais tias yuav luag tsis muaj sib txawv los ntawm lub cable 3 pawg.

Lub zoo meej tshaj plaws nyob rau lub sij hawm ntawd yog suav hais tias yog thib tsib qeb cable, tsim los rau cov kis ntawm cov ntaub ntawv nyob rau hauv lub frequencies txog li ib puas megahertz. Twisted khub qeb 5 yog tsis tsawg tshaj nees nkaum xya lem ib 'meter' ntev. Feem ntau, muaj ntau ntau daim, nees nkaum-tsib officers. Lub cable no yog tsim rau txuas computers rau hauv Internet thiab lub creation ntawm lub zos tes hauj lwm. Muaj cables 6 thiab 7 pawg, uas yog feem payment rau 200 thiab 600 megahertz. Qeb 6 cable yog siv los txuas rau Ethernet tes hauj lwm.

Thaum txuas mus rau lub zos network tsawg kawg yog ob computers muaj teeb meem. Nyob rau hauv thiaj li yuav kov yeej lawv thiab ua cov feem ntau pom kev twb kev txuas, yuav tsum tau network phaib ntawm computers thiab cov khub, xa mus rau lub thib tsib qeb, raws li zoo raws li connectors yog RJ-45.

Txij li thaum lub cables muaj cov officers, yog yooj yim mus txiav mus rau hauv lub phab ntsa tso pa, nws yuav siv sij hawm lawv CRIMP, uas yog nqa tawm raws li cov qauv thiab cov kev siv tshwj xeeb cov cuab yeej rau tsis cuam tshuam qhov zoo ntawm cov ntaub ntawv kis tau tus mob. Yog hais tias lub cable muaj yim conductors, nyob pinout cov khub Ethernet thiab Gigabit Ethernet qauv. Vim lub fact tias cov cables yog qeb 5 thiab 6 qhia qhov zoo nws tus kheej nyob rau hauv Torsion thiab dabtsi yog khoov, lawv ntse siv rau kev tsim ntawm thaj cords uas txuas nrog lub periphery outlets.

Nyob rau hauv ob embodiments, uas yog siv rau cov kev txuas xyuas hauv computer kom lub network los yog mus cuag ib tug PC mus rau lub network kho vajtse (cords). Ntxiv mus, tag nrho lub zos network yuav siv tsuas yog ib qho version, uas yuav tsum tau muaj nyob rau cov-khub pinout. Lub cable yuav tsum tau npaj kom txhij rau zoo mus rau hauv lub connector. Nws yog ib nqi sau cia hais tias ob qho tag nrho cov RJ-45 connector yuav tsum tau crimped sib npaug. Nws muaj ob hom ntawm crimping, uas yog siv rau cov twisted khub. Tus thawj (rau pem hauv ntej kev txiav txim) muaj cov kev taw qhia "workstation Hub". Qhov thib ob - tus ntoo khaub lig, tus ntoo khaub lig-Linkova.

Yuav kom txuas ncaj qha mus rau lub network card ntawm ob computers, koj yuav tsum dilute lub cable yog li ntawd cov khub (piv txwv li, cov txiv kab ntxwv thiab ntsuab) ntxeev. Yog li lub pinout yog muaj cov khub cable, raws li ib tug tshwm sim ntawm uas ib tug ntawm cov connectors yuav tsum tau crimped mus rau tus thawj embodiment, thiab lub thib ob - nyob rau hauv lub thib ob. Lub cable yuav ces yuav hu ua ib tug crossover. Kuj hu ua nulhabnym.

Yog li, qhov kom zoo dua ntawm lub twisted officers yog xav tau qhov yooj yim ntawm installation thiab tus nqi qis. Tso tseg conductors muaj ib tug ntau dua lub teeb liab attenuation thiab feem ntau coj mus cuag cov Internet, los txhim kho qhov zoo ntawm cov txheej txheem siv pinout cov khub cable uas tso cai rau kom hloov mus rau lub tebchaw nrog ib lub computer thiab peripherals.